com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID: 4267

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Kryo doesn't accept multi-threaded data access, there's a few workarounds for this, such as duplicating the buffer, but they sacrifice a bit of performance.

Solutions on the web

via GitHub by car2008
, 1 year ago
Encountered unregistered class ID: 4267
via GitHub by car2008
, 1 year ago
Encountered unregistered class ID: 2422353
via Google Groups by Venu Kemthur, 1 year ago
via GitHub by pablo-rago
, 2 years ago
Encountered unregistered class ID: 81
via mail-archive.com by Unknown author, 1 year ago
via GitHub by idar
, 1 year ago
Encountered unregistered class ID: 720389982
com.esotericsoftware.kryo.KryoException: Encountered unregistered class ID: 4267
at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:119)
at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:610)
at org.apache.spark.serializer.KryoDeserializationStream.readObject(KryoSerializer.scala:228)
at org.apache.spark.serializer.DeserializationStream.readValue(Serializer.scala:171)
at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:201)
at org.apache.spark.serializer.DeserializationStream$$anon$2.getNext(Serializer.scala:198)
at scala.collection.Iterator$$anon$13.hasNext(Iterator.scala:371)
at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:32)
at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39)
at org.apache.spark.util.collection.ExternalAppendOnlyMap.insertAll(ExternalAppendOnlyMap.scala:152)
at org.apache.spark.Aggregator.combineCombinersByKey(Aggregator.scala:58)
at org.apache.spark.shuffle.BlockStoreShuffleReader.read(BlockStoreShuffleReader.scala:83)
at org.apache.spark.rdd.ShuffledRDD.compute(ShuffledRDD.scala:98)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66)
at org.apache.spark.scheduler.Task.run(Task.scala:89)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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